17 #include "graph_list.h"
19 static int foreach_rrd_file (const char *dir, /* {{{ */
20 int (*callback) (const char *, void *),
34 while ((entry = readdir (dh)) != NULL)
37 char abspath[PATH_MAX + 1];
40 if (entry->d_name[0] == '.')
43 d_name_len = strlen (entry->d_name);
47 if (strcasecmp (".rrd", entry->d_name + (d_name_len - 4)) != 0)
50 snprintf (abspath, sizeof (abspath), "%s/%s", dir, entry->d_name);
51 abspath[sizeof (abspath) - 1] = 0;
53 memset (&statbuf, 0, sizeof (statbuf));
55 status = stat (abspath, &statbuf);
59 if (!S_ISREG (statbuf.st_mode))
62 entry->d_name[d_name_len - 4] = 0;
64 status = (*callback) (entry->d_name, user_data);
67 } /* while (readdir) */
71 } /* }}} int foreach_rrd_file */
73 static int foreach_dir (const char *dir, /* {{{ */
74 int (*callback) (const char *, void *),
88 while ((entry = readdir (dh)) != NULL)
91 char abspath[PATH_MAX + 1];
93 if (entry->d_name[0] == '.')
96 snprintf (abspath, sizeof (abspath), "%s/%s", dir, entry->d_name);
97 abspath[sizeof (abspath) - 1] = 0;
99 memset (&statbuf, 0, sizeof (statbuf));
101 status = stat (abspath, &statbuf);
105 if (!S_ISDIR (statbuf.st_mode))
108 status = (*callback) (entry->d_name, user_data);
111 } /* while (readdir) */
115 } /* }}} int foreach_dir */
117 int foreach_type (const char *host, const char *plugin, /* {{{ */
118 callback_type_t callback, void *user_data)
120 char abspath[PATH_MAX + 1];
122 if ((host == NULL) || (plugin == NULL))
125 snprintf (abspath, sizeof (abspath), "%s/%s/%s", DATA_DIR, host, plugin);
126 abspath[sizeof (abspath) - 1] = 0;
128 return (foreach_rrd_file (abspath, callback, user_data));
129 } /* }}} int foreach_type */
131 int foreach_plugin (const char *host, /* {{{ */
132 callback_plugin_t callback,
135 char abspath[PATH_MAX + 1];
140 snprintf (abspath, sizeof (abspath), "%s/%s", DATA_DIR, host);
141 abspath[sizeof (abspath) - 1] = 0;
143 return (foreach_dir (abspath, callback, user_data));
144 } /* }}} int foreach_plugin */
146 int foreach_host (callback_host_t callback, /* {{{ */
149 return (foreach_dir (DATA_DIR, callback, user_data));
150 } /* }}} int foreach_host */
152 size_t c_strlcat (char *dst, const char *src, size_t size) /* {{{ */
158 dst_len = strlen (dst);
159 src_len = strlen (src);
160 retval = dst_len + src_len;
162 if ((dst_len + 1) >= size)
169 /* Result will be truncated. */
173 memcpy (dst, src, src_len);
177 } /* }}} size_t c_strlcat */
179 int ds_list_from_rrd_file (char *file, /* {{{ */
180 size_t *ret_dses_num, char ***ret_dses)
182 char *rrd_argv[] = { "info", file, NULL };
183 int rrd_argc = (sizeof (rrd_argv) / sizeof (rrd_argv[0])) - 1;
191 info = rrd_info (rrd_argc, rrd_argv);
194 printf ("%s: rrd_info (%s) failed.\n", __func__, file);
198 for (ptr = info; ptr != NULL; ptr = ptr->next)
205 if (strncmp ("ds[", ptr->key, strlen ("ds[")) != 0)
208 keylen = strlen (ptr->key);
209 if (keylen < strlen ("ds[?].index"))
212 dslen = keylen - strlen ("ds[].index");
215 if (strcmp ("].index", ptr->key + (strlen ("ds[") + dslen)) != 0)
218 ds = malloc (dslen + 1);
222 memcpy (ds, ptr->key + strlen ("ds["), dslen);
225 tmp = realloc (dses, sizeof (*dses) * (dses_num + 1));
237 rrd_info_free (info);
241 assert (dses == NULL);
245 *ret_dses_num = dses_num;
249 } /* }}} int ds_list_from_rrd_file */
251 static int hsv_to_rgb (double *hsv, double *rgb) /* {{{ */
253 double c = hsv[2] * hsv[1];
254 double h = hsv[0] / 60.0;
255 double x = c * (1.0 - fabs (fmod (h, 2.0) - 1));
256 double m = hsv[2] - c;
262 if ((0.0 <= h) && (h < 1.0)) { rgb[0] = 1.0; rgb[1] = x; rgb[2] = 0.0; }
263 else if ((1.0 <= h) && (h < 2.0)) { rgb[0] = x; rgb[1] = 1.0; rgb[2] = 0.0; }
264 else if ((2.0 <= h) && (h < 3.0)) { rgb[0] = 0.0; rgb[1] = 1.0; rgb[2] = x; }
265 else if ((3.0 <= h) && (h < 4.0)) { rgb[0] = 0.0; rgb[1] = x; rgb[2] = 1.0; }
266 else if ((4.0 <= h) && (h < 5.0)) { rgb[0] = x; rgb[1] = 0.0; rgb[2] = 1.0; }
267 else if ((5.0 <= h) && (h < 6.0)) { rgb[0] = 1.0; rgb[1] = 0.0; rgb[2] = x; }
274 } /* }}} int hsv_to_rgb */
276 static uint32_t rgb_to_uint32 (double *rgb) /* {{{ */
282 r = (uint8_t) (255.0 * rgb[0]);
283 g = (uint8_t) (255.0 * rgb[1]);
284 b = (uint8_t) (255.0 * rgb[2]);
286 return ((((uint32_t) r) << 16)
287 | (((uint32_t) g) << 8)
289 } /* }}} uint32_t rgb_to_uint32 */
291 uint32_t get_random_color (void) /* {{{ */
293 double hsv[3] = { 0.0, 1.0, 1.0 };
294 double rgb[3] = { 0.0, 0.0, 0.0 };
296 hsv[0] = 360.0 * ((double) rand ()) / (((double) RAND_MAX) + 1.0);
298 hsv_to_rgb (hsv, rgb);
300 return (rgb_to_uint32 (rgb));
301 } /* }}} uint32_t get_random_color */
303 /* vim: set sw=2 sts=2 et fdm=marker : */